Cr39 Resin Bifocal Ophthalmic Lenses

We are offering our customers a wide range of CR39 Resin Bifocal Ophthalmic Lenses with following specifications :

CR39 Round Top / Flat Top / Blended Top (Invisible) Bifocal Lenses
Finished lenses:
a) Nd: 1.499
b) Blank diameter: 70mm, 65mm
c) Segment size: 28mm
d) Power range:
Sph: 0.00 ~ -2.00 / Add: +1.00 ~ +3.00 in 0.25D
Sph: 0.00 ~ +3.00/ Add: +1.00 ~ +3.00 in 0.25D
Semi-finished lenses:
a) Size: 70/28mm, 65/28mm
b) Base: 200, 400, 600, 800
c) Add: +1.00 ~ +3.00

1.56 Round Top / Flat Top / Invisible Bifocal Lenses
Finished Lenses:
1) Power Range:
Power: -0.00~-3.00 Add: +1.00~+3.00
Power: +0.00~+3.00 Add: +1.00~+3.00
2) Size: 70/28mm, 70/24mm
3) Coating Available: Uncoated, HC, HC Tintable, HMC, HMC+EMI
4) Multi coated in color: Green, Blue, Magenta, Gold
Semi-Finished Lenses:
1) Base: 200B, 400, 600B, 800B
2) Size: 70/28mm